St Johnston has a population of 523, making it the 478th largest place we list in Ireland. It is in Ulster.
St Johnston holds under a tenth of one per cent of Ireland's 5,356,950 people. Dublin, the largest place we list there, is 1958 times its size.
523
population
#478
in Ireland
The population, measured on the census's boundary
| What you mean | Population | Source |
|---|---|---|
| St. Johnston the CSO Built Up Area: the continuously built-up town | 571 | Census 2022 |
| St Johnston (GeoNames record) the figure in this page's heading; boundary unstated | 523 | GeoNames |
The census figure is the CSO's Census 2022 count for the Built Up Area, the boundary the CSO itself reports town populations on (data: CSO and Tailte Éireann, CC BY 4.0). Where the rows disagree, quote the census.
St Johnston is in Ulster, which has 49 recorded places.
Nearby in size
| Place | Region | Population |
|---|---|---|
| Ross Carbery | Munster | 534 |
| Conna | Munster | 526 |
| Bweeng | Munster | 524 |
| Tarmon | Munster | 521 |
| Ballingarry | Munster | 521 |
| Courtmacsherry | Munster | 520 |
All places in Ireland → · Ulster →
Figures are the latest available in GeoNames (CC BY 4.0), which draws on national censuses of varying dates — treat them as recent, not same-year. Country totals are UN World Population Prospects 2024 (medium variant) where the UN lists the country separately; the handful it reports under a parent state keep a GeoNames figure and are marked as such. Sources & method.